Silica films having zigzag mesoporous structures with fixed kink angles

Hirokatsu Miyata, Takashi Suzuki, Masatoshi Watanabe, Takashi Noma, Kazuhiro Takada, Taihei Mukaide, Kazuyuki Kuroda

    Research output: Contribution to journalArticle

    5 Citations (Scopus)

    Abstract

    Mesoporous silica films with a highly controlled unique zigzag porous structure are prepared on a rubbing-treated polyimide film. The honeycomb-packed tubular pores in the films have two distinct in-plane alignment directions with respect to the rubbing direction; that is, the films have an in-plane zigzag mesoporous structure with a fixed kink angle. The kink angle is controllable by the molar ratio of tetraethoxysilane as a silica source to surfactant in the reactant solution, and the increase of the ratio results in larger kink angles. The zigzag structure is found to be formed through the formation of an initial immature mesostructured film with uniaxially aligned rodlike surfactant assemblies. It is highly probable that the observed in-plane bending of the pores is caused by the translations shift of the positions of the adsorbed surfactant molecules along the polyimide chains on the surface and that the shift is caused by the steric effects between the adjacent hydrophilic components consisting of surfactant head groups and silica oligomers. The present results show that a unique nanoscale structure, which can hardly be obtained through a reaction under homogeneous conditions, can be formed under the heterogeneous conditions in which the reaction takes place within a restricted environment.

    Original languageEnglish
    Pages (from-to)1082-1089
    Number of pages8
    JournalChemistry of Materials
    Volume20
    Issue number3
    DOIs
    Publication statusPublished - 2008 Feb 12

    Fingerprint

    Silicon Dioxide
    Surface-Active Agents
    Silica
    Surface active agents
    Polyimides
    Oligomers
    Molecules
    Polymers
    Direction compound

    ASJC Scopus subject areas

    • Materials Chemistry
    • Materials Science(all)

    Cite this

    Miyata, H., Suzuki, T., Watanabe, M., Noma, T., Takada, K., Mukaide, T., & Kuroda, K. (2008). Silica films having zigzag mesoporous structures with fixed kink angles. Chemistry of Materials, 20(3), 1082-1089. https://doi.org/10.1021/cm702120m

    Silica films having zigzag mesoporous structures with fixed kink angles. / Miyata, Hirokatsu; Suzuki, Takashi; Watanabe, Masatoshi; Noma, Takashi; Takada, Kazuhiro; Mukaide, Taihei; Kuroda, Kazuyuki.

    In: Chemistry of Materials, Vol. 20, No. 3, 12.02.2008, p. 1082-1089.

    Research output: Contribution to journalArticle

    Miyata, H, Suzuki, T, Watanabe, M, Noma, T, Takada, K, Mukaide, T & Kuroda, K 2008, 'Silica films having zigzag mesoporous structures with fixed kink angles', Chemistry of Materials, vol. 20, no. 3, pp. 1082-1089. https://doi.org/10.1021/cm702120m
    Miyata H, Suzuki T, Watanabe M, Noma T, Takada K, Mukaide T et al. Silica films having zigzag mesoporous structures with fixed kink angles. Chemistry of Materials. 2008 Feb 12;20(3):1082-1089. https://doi.org/10.1021/cm702120m
    Miyata, Hirokatsu ; Suzuki, Takashi ; Watanabe, Masatoshi ; Noma, Takashi ; Takada, Kazuhiro ; Mukaide, Taihei ; Kuroda, Kazuyuki. / Silica films having zigzag mesoporous structures with fixed kink angles. In: Chemistry of Materials. 2008 ; Vol. 20, No. 3. pp. 1082-1089.
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